refactors some gun things (#4036)

* wow

* wack

* fix

* fix

* fuck you

* i am declaring war on gun devs

* fix

* fix

Co-authored-by: fake_vm_user <fake_vm_user>

code/modules/keybindings/keybind/__defines.dm

@@ -7,11 +7,13 @@
 #define CATEGORY_ROBOT "ROBOT"
 #define CATEGORY_MISC "MISC"
 #define CATEGORY_MOVEMENT "MOVEMENT"
+#define CATEGORY_ITEM "ITEMS"
 
 #define WEIGHT_HIGHEST 0
 #define WEIGHT_ADMIN 10
 #define WEIGHT_CLIENT 20
 #define WEIGHT_ROBOT 30
+#define WEIGHT_ITEM 35
 #define WEIGHT_MOB 40
 #define WEIGHT_LIVING 50
 #define WEIGHT_DEAD 60

code/modules/keybindings/keybind/human.dm

@@ -37,18 +37,3 @@
 	var/mob/living/carbon/human/H = user.mob
 	H.smart_equipbag()
 	return TRUE
-
-/datum/keybinding/human/toggle_gun_safety
-	hotkey_keys = list("C")
-	name = "toggle_gun_safety"
-	full_name = "Toggle Gun Safety"
-	description = "Toggle the safety of a gun in your hand"
-
-/datum/keybinding/human/toggle_gun_safety/down(client/user)
-	var/mob/living/carbon/human/H = user.mob
-	if(H)
-		var/obj/item/gun/G = H.get_active_hand()
-		if(!G)
-			G = H.get_inactive_hand() //We'll try both hands just in case
-		if(G)
-			G.toggle_safety_verb()

code/modules/keybindings/keybind/item.dm

@@ -0,0 +1,23 @@
+/datum/keybinding/item
+	weight = WEIGHT_ITEM
+	category = CATEGORY_ITEM
+
+/datum/keybinding/item/can_use(client/user)
+	return TRUE
+
+/datum/keybinding/item/unique_action
+	name = "unique_action"
+	full_name = "Unique Action"
+	description = "Triggers an unique action, based on whichever item you're holding."
+	hotkey_keys = list("C")
+
+/datum/keybinding/item/toggle_gun_safety
+	hotkey_keys = list()
+	name = "toggle_gun_safety"
+	full_name = "Toggle Gun Safety"
+	description = "Toggle the safety of a gun in your hand"
+
+/datum/keybinding/human/toggle_gun_safety/down(client/user)
+	var/obj/item/gun/G = locate() in user.mob.get_all_held_items()
+	if(G)
+		G.toggle_safety(user)